US4511334A - Dental instrument for cutting slots for receiving implants into the jaw - Google Patents

Dental instrument for cutting slots for receiving implants into the jaw Download PDF

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Publication number
US4511334A
US4511334A US06/523,378 US52337883A US4511334A US 4511334 A US4511334 A US 4511334A US 52337883 A US52337883 A US 52337883A US 4511334 A US4511334 A US 4511334A
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United States
Prior art keywords
handpiece
sawblade
periphery
coolant
radial passages
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Expired - Fee Related
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US06/523,378
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Hans L. Grafelmann
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/021—Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/12—Tooth saws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089—Implanting tools or instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D57/00—Sawing machines or sawing devices not covered by one of the preceding groups B23D45/00 - B23D55/00
    • B23D57/0092—Sawing machines or sawing devices not covered by one of the preceding groups B23D45/00 - B23D55/00 dismountable, collapsible or transportable, e.g. by means of a carrying case
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/02—Devices for lubricating or cooling circular saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/02—Devices for lubricating or cooling circular saw blades
    • B23D59/025—Devices for lubricating or cooling circular saw blades the lubricating or cooling medium being applied through the mounting means of the tool, e.g. the tool spindle or hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/025—Details of saw blade body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B9/00—Portable power-driven circular saws for manual operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids

Definitions

  • This invention relates to a dental instrument which is adapted to be driven by a dental handpiece and serves to cut slots for receiving implants into a jaw.
  • this object is accomplished by the provision of a rotating sawblade having radial slots or bores for conducting a coolant from the central region of the sawblade to the periphery of the sawblade, which is provided with sawteeth at its periphery.
  • the sawblade is suitably formed with a circular series of apertures, which are spaced around the center of the sawblade, and with a plurality of radial slots, which lead from respective ones of the apertures to the periphery of the sawblade, which at its periphery is provided with sawteeth.
  • the coolant is supplied through a hose, which is secured to the handpiece, and emerges from the hose on the inside surface of the sawblade over the circular series of apertures.
  • Each aperture has preferably a cardioid configuration but may have a different shape too.
  • a slot or groove extends radially outwardly from the apex of the cardioid aperture.
  • the sawblade may be formed with radial or diametrical bores through which the coolant is guided or conducted from the axial bore of the drive shaft to an outlet opening at the periphery of the sawblade.
  • the sawteeth are preferably set so that they will tend to retain the coolant, which is caused to flow off radially by centrifugal force. This purpose is also served by the apertures. As a result, coolant is supplied at a relatively high rate to the working or cutting region in the depth.
  • the cut which is formed by the circular saw has rounded corners.
  • the corners may be milled to be right-angled if this is necessary in view of the shape of the implant to be inserted.
  • the slot which is cut into the jaw is suitably also wedge-shaped in cross-section. This is accomplished in accordance with the invention by means of sawblades which have graded thicknesses and which are used in such a manner that the thickest sawblade is used to cut to the smallest depth and the thinnest sawblade is used to cut to the largest depth.
  • the drawing shows two preferred embodiments of the invention in diagrammatic perspective views.
  • FIG. 1 is a perspective view showing a handpiece and an anglepiece, a circular saw, which has been inserted into the anglepiece, and means for supplying and guiding coolant,
  • FIG. 2 is a view which is similar to FIG. 1 and shows different means for supplying a coolant
  • FIG. 3 is a transverse sectional view showing the saw of FIG. 2,
  • FIG. 4 is a side elevation showing the saws of FIGS. 1 and 2,
  • FIG. 5 is a top plan view showing the sawblade of FIG. 1 and
  • FIG. 6 represents the cross-section of a slot.
  • the drawing shows a handpiece 2 and a anglepiece 2', which is attached to the handpiece 2.
  • the shaft 3 carrying the sawblade 4 is gripped in the chuck of the anglepiece 2'. Coolant is supplied through the hose 5.
  • the center 9 of the sawblade 4 is surrounded by a circular series of apertures 10.
  • the outlet end 6 of the coolant hose 5 is disposed over the circular series of apertures 10.
  • the coolant discharged from the hose 5 enters the apertures 10 and under centrifugal force is thrown through the slots 8 to the periphery 7 of the sawblade 4, which is provided at its periphery with set teeth, each of the teeth being set in a lateral direction opposite to the lateral direction of adjacent teeth, which tend to retain the coolant so that the latter will finally flow to the cutting region disposed at a large depth.
  • the coolant is supplied and guided via the bore 6a of the drive shaft 3 to the radial bores 8a in the sawblade 4, which has a larger thickness.
  • FIG. 6 shows a jaw 11, which has been formed with a wedge-shaped slot 12 by means of three sawblades 4a, 4b, 4c, which increase in thickness in that order.
  • the corrugated implant 13 is then inserted into the downwardly tapering slot 12.

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  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Dentistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

A dental rotary cutting instrument is provided, which is adapted to be driven by a dental handpiece and to cut slots for receiving implants into a jaw. The instrument includes a sawblade, which has a periphery and is provided at the periphery with sawteeth and is formed with a plurality of angularly spaced apart, radial passages, which open at said periphery. Driving and coolant supply means are adapted to be connected to a dental handpiece and to transmit torque from the handpiece to the sawblade to rotate the latter and are adapted to supply a coolant from the handpiece to each of the radial passages at a point which is radially inwardly spaced from the periphery.

Description

This invention relates to a dental instrument which is adapted to be driven by a dental handpiece and serves to cut slots for receiving implants into a jaw.
It is known that such slots can be cut with a burr, which is caused to drill a hole into the jaw at one point and is then displaced at right angles to the axis of the burr. Because the burr cannot be cooled during this cutting operation in a large depth and is being soiled by the drillings, the burr must often be pulled out, cleaned, and permitted to cool and then be re-inserted. As a result, the slot which has been cut is not defined by striaght lines but is formed in its side walls with steps and recesses, which will obstruct the insertion of the implant and may cause the bone to be destroyed.
It is an object of the invention to provide a dental instrument for cutting slots for receiving implants into a jaw while a formation of steps in the resulting slot is avoided.
In accordance with the invention this object is accomplished by the provision of a rotating sawblade having radial slots or bores for conducting a coolant from the central region of the sawblade to the periphery of the sawblade, which is provided with sawteeth at its periphery.
For this purpose the sawblade is suitably formed with a circular series of apertures, which are spaced around the center of the sawblade, and with a plurality of radial slots, which lead from respective ones of the apertures to the periphery of the sawblade, which at its periphery is provided with sawteeth. The coolant is supplied through a hose, which is secured to the handpiece, and emerges from the hose on the inside surface of the sawblade over the circular series of apertures.
Each aperture has preferably a cardioid configuration but may have a different shape too. A slot or groove extends radially outwardly from the apex of the cardioid aperture.
If the sawblade has a sufficiently large thickness, it may be formed with radial or diametrical bores through which the coolant is guided or conducted from the axial bore of the drive shaft to an outlet opening at the periphery of the sawblade.
The sawteeth are preferably set so that they will tend to retain the coolant, which is caused to flow off radially by centrifugal force. This purpose is also served by the apertures. As a result, coolant is supplied at a relatively high rate to the working or cutting region in the depth.
The cut which is formed by the circular saw has rounded corners. By means of a burr, the corners may be milled to be right-angled if this is necessary in view of the shape of the implant to be inserted.
If the implant is wedge-shaped or corrugated in cross-section the slot which is cut into the jaw is suitably also wedge-shaped in cross-section. This is accomplished in accordance with the invention by means of sawblades which have graded thicknesses and which are used in such a manner that the thickest sawblade is used to cut to the smallest depth and the thinnest sawblade is used to cut to the largest depth.
The drawing shows two preferred embodiments of the invention in diagrammatic perspective views.
In the drawing,
FIG. 1 is a perspective view showing a handpiece and an anglepiece, a circular saw, which has been inserted into the anglepiece, and means for supplying and guiding coolant,
FIG. 2 is a view which is similar to FIG. 1 and shows different means for supplying a coolant,
FIG. 3 is a transverse sectional view showing the saw of FIG. 2,
FIG. 4 is a side elevation showing the saws of FIGS. 1 and 2,
FIG. 5 is a top plan view showing the sawblade of FIG. 1 and
FIG. 6 represents the cross-section of a slot.
The drawing shows a handpiece 2 and a anglepiece 2', which is attached to the handpiece 2. The shaft 3 carrying the sawblade 4 is gripped in the chuck of the anglepiece 2'. Coolant is supplied through the hose 5.
The center 9 of the sawblade 4 is surrounded by a circular series of apertures 10. The outlet end 6 of the coolant hose 5 is disposed over the circular series of apertures 10. The coolant discharged from the hose 5 enters the apertures 10 and under centrifugal force is thrown through the slots 8 to the periphery 7 of the sawblade 4, which is provided at its periphery with set teeth, each of the teeth being set in a lateral direction opposite to the lateral direction of adjacent teeth, which tend to retain the coolant so that the latter will finally flow to the cutting region disposed at a large depth.
In accordance with FIGS. 2 and 3 the coolant is supplied and guided via the bore 6a of the drive shaft 3 to the radial bores 8a in the sawblade 4, which has a larger thickness.
FIG. 6 shows a jaw 11, which has been formed with a wedge-shaped slot 12 by means of three sawblades 4a, 4b, 4c, which increase in thickness in that order. The corrugated implant 13 is then inserted into the downwardly tapering slot 12.

Claims (12)

What is claimed is:
1. In a dental rotary instrument, which is adapted to be driven by a dental handpiece and to cut a slot for receiving an implant into a jaw,
the improvement which comprises
a rotary sawblade, which has a circular periphery and is provided at said periphery with sawteeth and is formed with a plurality of angularly spaced apart, radial passages, which open at said periphery,
driving means, connected to a dental handpiece to transmit torque from said handpiece to said sawblade for rotating the latter, and
coolant supply and guiding means disposed within said sawblade and connected to said dental handpiece to supply and guide a coolant from said handpiece to each of said radial passages at a point which is radially inwardly spaced from said periphery, said sawteeth being set at said periphery so as to retain the coolant flow at the cutting region of said sawblade.
2. The improvement set forth in claim 1, wherein said radial passages consist of radial grooves.
3. The improvement set forth in claim 1, wherein said radial passages consist of radial slots.
4. The improvement set forth in claim 1, wherein said radial passaages consist of diametrical bores.
5. The improvement as set forth in claim 4, wherein
said driving and coolant supply and guiding means comprise a shaft, which is non-rotatably connected to said sawblade and is adapted to be connected to said sawblade and is adapted to be connected to said handpiece and to transmit torque from said handpiece to said sawblade, and
said shaft is formed with an axial bore, which communicates with said diametrical bores and is adapted to supply coolant from said handpiece to said diametrical bores, via the center of said sawblade.
6. The improvement set forth in claim 1, wherein
said sawblade is formed with a plurality of apertures, which are arranged in a circular series and disposed at the radially inner ends of respective ones of said radial passages,
each of said radial passages is open only on one side of said sawblade, and
said driving and coolant supply and guiding means are adapted to supply said coolant to each of said apertures.
7. The improvement set forth in claim 6, wherein said driving and coolant supply and guiding means comprise a hose, which is adapted to be connected to said handpiece and has an open end disposed over said circular series of apertures on the side of the sawblade which faces said handpiece when said driving and coolant supply means are connected to said handpiece.
8. The improvement set forth in claim 6, wherein
each of said apertures has a cardioid configuration and has a radially outwardly directed apex and
said radial passages extend from said apices.
9. In a dental rotary cutting instrument, which is adapted to be driven by a dental handpiece, and to cut a slot for receiving an implant into a jaw,
the improvement which comprises
a sawblade, which has a circular periphery and is provided at said periphery with sawteeth which are set so as to retain coolant flow at the cutting region of said sawblade, and is formed with a plurality of angularly spaced apart, radial passages, which open at said periphery,
said sawblade is adapted to be connected to said handpiece and to be rotated by said handpiece, and to receive coolant from said handpiece in said passages at points which are spaced radially inwardly from said periphery.
10. The improvement set forth in claim 9, wherein
said sawblade is formed with a plurality of apertures, which are arranged in a circular series and disposed at the radially inner ends of respective ones of said radial passages,
each of said radial passages is open only on one side of said sawblade, and
said apertures are adapted to receive said coolant from said handpiece.
11. The improvement set forth in claim 10, wherein
each of said apertures has a cardioid configuration and has a radially outwardly directed apex and
said radial passages extend from said apices.
12. In a method of cutting a slot for receiving an implant into a bore by means of a dental rotary cutting instrument, which is adapted to be driven by a dental handpiece,
the improvement residing in using an instrument which comprises
sawblades, which have a circular periphery and are provided at said periphery with sawteeth, and are formed with a plurality of angularly spaced apart, radial passages, which open at said periphery,
said sawteeth being set to retain the coolant flow at the cutting region of said sawblades,
driving and coolant supply and guiding means, which are adapted to be connected to a dental handpiece and to transmit torque from said handpiece to said sawblades to rotate the latter, and are adapted to supply and guide a coolant from said handpiece to each of said radial passages at a point which is radially inwardly spaced from said periphery,
said coolant supply and guiding means being formed within said sawblades, and
using progressively thinner ones of said sawblades in successive steps to cut said slot to progressively larger depths, so as to form a downwardly tapering slot.
US06/523,378 1982-11-25 1983-08-15 Dental instrument for cutting slots for receiving implants into the jaw Expired - Fee Related US4511334A (en)

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DE8233133 1982-11-25
DE8233133[U] 1982-11-25

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820156A (en) * 1986-12-29 1989-04-11 Ross Systems Corporation Trephine dental drill
US5080588A (en) * 1988-06-27 1992-01-14 The University Of Michigan Surface finishing apparatus and method
US5791902A (en) * 1995-09-30 1998-08-11 Lauks; Nikola Drill bit for producing bone cavities for dental implants
US6113618A (en) * 1999-01-13 2000-09-05 Stryker Corporation Surgical saw with spring-loaded, low-noise cutting blade
US20060288993A1 (en) * 2005-06-27 2006-12-28 Anthony Baratta Tools and methods for making and using tools, blades and methods of making and using blades
US20080105096A1 (en) * 1999-01-15 2008-05-08 Cutting Edge Designs, Llc Liquid transport cavity saw blade
US20110004216A1 (en) * 2009-07-02 2011-01-06 Arthrex, Inc. Tibial rasp
CN101961877A (en) * 2010-09-13 2011-02-02 浙江农林大学 Saw blade cooling chip-removing device of multi-bade sawing machine
US20110143308A1 (en) * 2008-08-21 2011-06-16 Gangnam Chicago Dental Clinic , 7F Piezo insert for implant surgical operation
US8151783B2 (en) 2005-06-27 2012-04-10 Husqvarna Outdoor Products Inc. Tools and methods for making and using tools, blades and methods of making and using blades
US9168188B2 (en) 2007-11-13 2015-10-27 Orthopediatrics Corporation Cast removal system
CN105689796A (en) * 2016-04-28 2016-06-22 山东理工大学 Efficient saw head
CN105689797A (en) * 2016-04-28 2016-06-22 山东理工大学 Efficient aluminium alloy sawing device
KR20210052534A (en) * 2018-10-05 2021-05-10 니시오 히데토시 Interdental space making device and space making method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433570A1 (en) * 1984-09-13 1986-03-20 Leiter, Alfred, 7530 Pforzheim Circulating tool for surgical, especially dental surgical, purposes and device for supplying the instrument with a coolant
DE3712929A1 (en) * 1987-04-16 1988-11-03 Alexander Dr Heinl Surgical instrument
CN203634243U (en) * 2013-09-10 2014-06-11 上海交通大学医学院附属第九人民医院 Orthognathic bone cutting saw

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1117660A (en) * 1911-04-24 1914-11-17 John M Gilmore Dental apparatus.
US3240243A (en) * 1961-07-27 1966-03-15 Alexander J Golick Mist lubricated ripsawing method and mechanisms
US3663787A (en) * 1969-06-25 1972-05-16 Walter T Haswell Electrically-assisted combustion cutting apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1117660A (en) * 1911-04-24 1914-11-17 John M Gilmore Dental apparatus.
US3240243A (en) * 1961-07-27 1966-03-15 Alexander J Golick Mist lubricated ripsawing method and mechanisms
US3663787A (en) * 1969-06-25 1972-05-16 Walter T Haswell Electrically-assisted combustion cutting apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4820156A (en) * 1986-12-29 1989-04-11 Ross Systems Corporation Trephine dental drill
US5080588A (en) * 1988-06-27 1992-01-14 The University Of Michigan Surface finishing apparatus and method
US5791902A (en) * 1995-09-30 1998-08-11 Lauks; Nikola Drill bit for producing bone cavities for dental implants
US6113618A (en) * 1999-01-13 2000-09-05 Stryker Corporation Surgical saw with spring-loaded, low-noise cutting blade
US20080105096A1 (en) * 1999-01-15 2008-05-08 Cutting Edge Designs, Llc Liquid transport cavity saw blade
US8151783B2 (en) 2005-06-27 2012-04-10 Husqvarna Outdoor Products Inc. Tools and methods for making and using tools, blades and methods of making and using blades
US20060288993A1 (en) * 2005-06-27 2006-12-28 Anthony Baratta Tools and methods for making and using tools, blades and methods of making and using blades
US9168188B2 (en) 2007-11-13 2015-10-27 Orthopediatrics Corporation Cast removal system
US20110143308A1 (en) * 2008-08-21 2011-06-16 Gangnam Chicago Dental Clinic , 7F Piezo insert for implant surgical operation
US8790347B2 (en) * 2009-07-02 2014-07-29 Arthrex, Inc. Tibial rasp
US20110004216A1 (en) * 2009-07-02 2011-01-06 Arthrex, Inc. Tibial rasp
CN101961877A (en) * 2010-09-13 2011-02-02 浙江农林大学 Saw blade cooling chip-removing device of multi-bade sawing machine
CN101961877B (en) * 2010-09-13 2012-11-14 浙江农林大学 Saw blade cooling chip-removing device of multi-bade sawing machine
CN105689796A (en) * 2016-04-28 2016-06-22 山东理工大学 Efficient saw head
CN105689797A (en) * 2016-04-28 2016-06-22 山东理工大学 Efficient aluminium alloy sawing device
KR20210052534A (en) * 2018-10-05 2021-05-10 니시오 히데토시 Interdental space making device and space making method
US20210386514A1 (en) * 2018-10-05 2021-12-16 Naoko Miki Device and Method for Making Space Between Teeth

Also Published As

Publication number Publication date
DE8233133U1 (en) 1983-06-01
CH661861A5 (en) 1987-08-31
IT1169668B (en) 1987-06-03
IT8323596A0 (en) 1983-11-04

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